A Romanian who signed for a parcel containing a kilo of cocaine did not realise the postman was in fact an undercover police officer. Mirian Serea, 24, of Westleigh Gardens, Harrow, was sentenced to 10 years for importing class A drugs at Harrow Crown Court today (Friday). The jury heard how police intercepted the delivery of the suspect package with Serea's name and address on after it arrived at Royal Mail Mount Pleasant Sorting Office in central London. On April 10 at 12.40pm an undercover police officer dressed as a postman and driving a Royal Mail van delivered the package to the man at his address in Westleigh Gardens, Edgware. Serea presented his Romanian passport to prove his identity and the police officer recorded his identity number. Three minutes later officers raided the house and found the suspect package unopened on Serea's bed. He was handcuffed and taken to Harrow Police Station where he was interviewed but answered no comment to every question. During the trial the undercover police officer spoke to the jury behind a screen under the new law which protects vulnerable witness's identity. He said: "He was pretty emotionless. He didn't look nervous but he didn't look confident. He just wanted to get the package and get the job done. "It was very clear he didn't understand what I was saying. He just showed me the passport and wanted the package." But Suzanne Francis, defending, said: "He wasn't sweating or looking nervous because he wasn't aware of what he was signing for. There was nothing about signing for a parcel which was unusual. "The fact he showed a passport is not enough evidence to prove that he was importing drugs. The only piece of evidence is that there was a no comment interview but he is a foreign national." Judge Simon John Blackford said: "He has been found in possession of a substantial amount of drugs. Doesn't this call for answers during the interview. The parcel had his name on it."